I'm not doing any agressive driving with mine either,it replaced my 02 GP GT.I usually average 40-50 k miles per year driving for work,mainly highway driving.I was just curious if you noticed if it handled any different in everyday driving.Finding two 18x8's is gonna be pretty costly,I just wanted to know from someone who's swapped them whether it affects the ride at all or is all of Pontiac's engineering just BS.With the amount of miles that I drive I really need to have tires that I can rotate!!!!!!!!!!!!!!